Nearly 20 years ago, the last known Cascades frog disappeared from Lassen Volcanic National Park. Now researchers are bringing them back, hoping the frogs can stage a comeback.

The last Cascades frog in Lassen Volcanic National Park in Northern California was well known to amphibian survey crews. Year after year, she turned up near Juniper Lake, full of eggs, seeking a mate.

An array of factors contributed to the disappearance of these amphibians, including climate change and predators.

Cascades frogs in the United States could face a hard future where trout dominate their habitats, high mountain lakes, and climate change dries up many of their shallower habitats. Disclaimer: AAAS ...

This is the Sumatran cascade frog Sumaterana crassiovis in its natural habitat. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by ...